Dredrum is a handmade Eurorack 8-bit 3-voice lo-fi percussion module:

• 3 voices
• selectable 8-bit waveform for each voice (sine, square, saw, noise)
• 3rd voice switchable to click (only one waveform period)
• infinite sound with decay pot turned fully to right for pseudodrones
• available with TRIG input or GATE input
• audio processing 8-bit/15.625kHz
• AVR ISP for software upgrades / hacking

Controls:

• pitch
• pitch envelope (sweep)
• decay
• level
• click switch for voice 3
• play button
• voice selection buttons
• waveform selection buttons
• jumper to bypass output AC coupling capacitor resulting DC coupled output

Inputs: 5V trig (or gate) input, 100k impedance

Outputs: audio output (-2.5V – 2.5V AC coupled, 0V – 5V DC coupled)

Included: 10pin-16pin Eurorack bus cable

Module width: 10HP (50.5mm)

Panel: 2mm Module safe

Depth: 20mm

Power: Eurorack +12V (30mA) or any 7-12V DC power supply (or battery!)

Power connection: 10pin